Wikipedia
Marsh rabbit
The marsh rabbit (Sylvilagus palustris) is a small cottontail rabbit found in marshes and swamps of coastal regions of the Eastern and Southern United States. It is a strong swimmer and found only near regions of water. It is similar in appearance to the eastern cottontail (Sylvilagus floridanus) but is characterized by smaller ears, legs, and tail.
Usage examples of "marsh rabbit".
She'd watched him, after stepping from the police car, jump at the sight of a puny marsh rabbit as if it were a hundred-pound timber wolf.